:root{
  --bg:#faf9f7; --panel:#fff; --ink:#1c1b19; --muted:#6b6862; --line:#e3e0da;
  --accent:#2f6f4e; --accent-soft:#e8f0ea;
  --woven:#2f6f4e; --woven-bg:rgba(47,111,78,.09);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#16181a; --panel:#1e2124; --ink:#e8e6e3; --muted:#9a968f; --line:#32363a;
    --accent:#6dbf95; --accent-soft:#1f2d26;
    --woven:#6dbf95; --woven-bg:rgba(109,191,149,.13);
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",Segoe UI,sans-serif;
  font-size:16px;line-height:1.75}
a{color:var(--accent)}
.wrap{max-width:720px;margin:0 auto;padding:0 20px}

header.site{border-bottom:1px solid var(--line);background:var(--panel)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;
  gap:16px;height:60px}
.brand{font-size:19px;font-weight:600;letter-spacing:.01em;text-decoration:none;color:var(--ink)}
nav.site a{font-size:13.5px;margin-left:16px;text-decoration:none;color:var(--muted)}
nav.site a:hover{color:var(--accent)}

.hero{padding:72px 0 8px;text-align:center}
.hero h1{font-size:34px;line-height:1.35;margin:0 0 14px;letter-spacing:.01em}
.hero p.lead{font-size:17px;color:var(--muted);margin:0 auto;max-width:34em}
@media (max-width:600px){.hero{padding:48px 0 4px}.hero h1{font-size:27px}}

.demo{margin:40px 0 8px;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:28px 30px}
.demo .doc{font-family:"Hiragino Mincho ProN","Yu Mincho",Georgia,serif;
  font-size:18px;line-height:2.05;margin:0}
.demo .w{color:var(--woven);background:var(--woven-bg);
  box-shadow:inset 0 -1px 0 var(--woven);padding:0 1px;border-radius:3px}
.demo .cap{font-size:12.5px;color:var(--muted);margin:14px 0 0;line-height:1.6;
  font-family:inherit}
@media (max-width:600px){.demo{padding:20px 18px}.demo .doc{font-size:16.5px;line-height:1.95}}

section{padding:40px 0}
h2{font-size:20px;margin:0 0 16px;letter-spacing:.01em}
h3{font-size:16px;margin:26px 0 6px}
.cards{display:grid;gap:14px;grid-template-columns:repeat(3,1fr)}
@media (max-width:760px){.cards{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.card h3{margin:0 0 6px;font-size:15.5px}
.card p{margin:0;font-size:14px;color:var(--muted);line-height:1.7}

.note{background:var(--accent-soft);border-radius:10px;padding:14px 18px;
  font-size:14px;line-height:1.7}

footer.site{border-top:1px solid var(--line);margin-top:40px;padding:26px 0 44px;
  color:var(--muted);font-size:13px}
footer.site a{color:var(--muted)}
footer.site .row{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:10px}

.legal{padding:36px 0 8px}
.legal h1{font-size:25px;margin:0 0 6px}
.legal .asof{color:var(--muted);font-size:13px;margin:0 0 28px}
.legal h2{font-size:17px;margin:32px 0 8px;padding-top:4px}
.legal p,.legal li{font-size:15px}
.legal ul{padding-left:1.3em;margin:8px 0}
.legal li{margin-bottom:5px}
table.d{border-collapse:collapse;width:100%;font-size:14px;margin:10px 0}
table.d th,table.d td{border:1px solid var(--line);padding:8px 10px;text-align:left;
  vertical-align:top}
table.d th{background:var(--accent-soft);font-weight:600;white-space:nowrap}